What you have to take into consideration when thinking of a United Arab States is the following.
A lot of the countries you talk about are not Arab.
However they are Muslim and Islam is a younger religion than Christianity and the countries where it's most prevalent are mainly very backward countries. Yes I know they had a civilisation 2,000 years ago, but since then what?
So compare "Islam" of the 21st century and Christianity of the 16th century, even though I would say Eur pope was more advanced in those days.
We had the
Spanish Inquisition and in England we had
Guy Fawkes with Catholics trying to blow up a Protestant king. Who followed
Mary of England was exacting Protestants.
And I could go on. so was Europe ready to be united 500 years ago? Well the same chance of the Nation of Islam uniting. Maybe a few people would like you to think there's a chance to promote their own cause. But it will not happen for a very long time and before then the oil will run out, the few with money will leave the desert behind and those left will go back to herding camels.
The only thing that unites them is their hate for Israel and an invading "Christian" army. Remove them and the terrorists lose the only thing keeping them together.